Today, I would like to share my notes from an article I just read by the educator Benjamin Bloom. All quotations are from his 1984 article titled “The 2 sigma problem.” In the article, he describes a series of experiments, in which there was a control group and two experimental conditions. In the control group, students received conventional classroom instruction; in one experimental group, students participated in a mastery-learn...Continue reading at the original source →

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